AS200858 - RACKONE Rackone SrlPARFC 4890 ✓RPKI ✓ 1/1ASPA -

AS overview

Test target: 2a06:de40::1 · static prefix probe · address space: PA · prefixes announced: 1

prefix(es): 2a06:de40::/29

MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO peering

Random-IP probe (yarrp) into the AS' prefixes

At least one router inside AS200858's announced prefix replied during the random-target probe. Hop(s): 2a06:de40::a. These are candidate targets for direct testing.

ICMPv6 Type 2 (Packet Too Big) acceptance - active test

Type 2 honored. Forged ICMPv6 PTB (MTU=1280) was accepted by the destination's stack: the next 1500-byte Echo Reply arrived split into 2 fragments via the IPv6 Fragment Header.
method: ICMPv6 Echo + forged PTB, tested 2026-09-23T12:05:16Z

Multi-vantage path map

Every hop of all vantages’ traceroutes toward the target, drawn left→right, grouped into per-AS bubbles (a hop seen from several vantages is one shared bubble, so converging paths merge). It answers two questions per vantage — shown on each source bubble as echo ✓/⚠/✗ · trace ✓/✗: did the destination reply to ICMPv6 Echo (✓ honored, ⚠ replied but PTB not honored, ✗ no reply), and did the traceroute reach it. A line to the target is drawn only when that vantage got an echo reply — solid if the PTB was honored, dashed if not (reachable but a broken-PMTUD / RFC 4890 violation). The path depth still shows how far the traceroute itself got, and runs of unanswered (* *) hops collapse into one dashed “silent” bubble. Open full size ↗

• ● SRB host (SOX, Belgrade)
• ● DE host (Berlin)
• ● DE host (Düsseldorf)
• ● NL host (go6lab)
• ● ITA host (Karsolink)
• ● SLO host (6connect)
• ● SLO host (T-2)
• ── solid line = echo reply, PTB honored (clean reach)
• — — dashed line = echo reply but PTB not honored (RFC 4890 violation)
• no line = no echo reply (never reached)
• ◉ target: green = clean, amber = reachable-but-violation / unreachable
• ⚠ suspected drop AS
• ⋯ silent (unanswered) hops
• ● IXP hop

From SRB host (SOX, Belgrade)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.014ms pmtu 1500
 1:  _gateway                                              0.387ms 
 1:  _gateway                                              0.484ms 
 2:  sox-pn.sox.rs                                         0.449ms 
 3:  2001:7f8:1e:8::3d                                     0.552ms asymm  2 
 4:  2001:67c:128c::699                                   19.876ms 
 5:  unassigned.invalid                                   55.025ms reached
     Resume: pmtu 1500 hops 5 back 6 

From DE host (Berlin)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 15, hop 17 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.024ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.443ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.364ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.923ms 
 3:  ae0-10.cr10.ber03.lwlcom.net                          1.000ms 
 4:  ae0-15.cr11.dtm01.lwlcom.net                          8.436ms asymm  5 
 5:  ae0-10.cr10.dtm02.lwlcom.net                          8.656ms asymm  6 
 6:  ae0-50.cr10.dus02.lwlcom.net                          8.900ms asymm  3 
 7:  ae0-10.cr10.dus01.lwlcom.net                          8.991ms asymm  4 
 8:  ae0-90.cr11.dus01.lwlcom.net                          8.861ms asymm  5 
 9:  as3303.dusseldorf.megaport.com                       17.612ms asymm 13 
10:  i00ffm-005-loo179.bb.ip-plus.net                     17.699ms asymm 12 
11:  i62bsw-015-loo179.ip6.ip-plus.net                    17.730ms asymm 14 
12:  i73olt-005-loo179.bb.ip-plus.net                     17.736ms 
13:  i71lzf-015-loo179.bb.ip-plus.net                     18.015ms asymm 12 
14:  i63bel-005-loo179.bb.ip-plus.net                     19.961ms asymm 13 
15:  as3303-as12874-bel-001-ser0.ce.ip-plus.net          279.755ms asymm  9 
16:  2001:b00:1:1:1::1a9                                  22.890ms asymm  8 
17:  2001:b00:1:1:1::1c5                                  23.606ms asymm  9 
18:  2001:b01:2400:ce::1                                  23.085ms asymm 10 
19:  2001:b01:2400:ce::2                                  23.215ms asymm 11 
20:  unassigned.invalid                                   29.580ms asymm 12 
21:  unassigned.invalid                                   26.579ms reached
     Resume: pmtu 1500 hops 21 back 11 

From DE host (Düsseldorf)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.026ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.389ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.299ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            7.543ms 
 3:  no reply
 4:  lag11.core3-dus1.bb.wiit.network                      0.606ms 
 5:  lag0-vl1011.core1-fra-ix.bb.wiit.network              4.654ms 
 6:  lag0-vl1001.core1-nbg-ncd.bb.wiit.network             7.002ms 
 7:  lag0-vl6.core2-nbg-ncd.bb.wiit.network                6.975ms 
 8:  lag0-vl1006.core2-muc2.bb.wiit.network               10.652ms 
 9:  lag0-vl1009.core1-muc-eq3.bb.wiit.network             9.980ms 
10:  lag0-vl1001.core1-pda-vsix.bb.wiit.network           20.698ms 
11:  lag0-vl1001.core1-mil-mix.bb.wiit.network            21.877ms asymm  9 
12:  lag0-vl5.core3-mil-irid.bb.wiit.network              20.468ms asymm  8 
13:  irideos.minap.it                                     20.804ms asymm  9 
14:  2a02:7d8::1                                          20.816ms asymm 10 
15:  unassigned.invalid                                   24.825ms reached
     Resume: pmtu 1500 hops 15 back 10 

From NL host (go6lab)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.041ms pmtu 1500
 1:  2a00:8642:42::2                                       2.620ms 
 1:  2a00:8642:42::2                                       1.640ms 
 2:  gw.friends.steffann.nl                                5.178ms 
 3:  2a00:1ca8:1::194                                      5.862ms 
 4:  2a03:3f40::10:33                                      7.256ms 
 5:  no reply
 6:  2001:b00:1:1:3::139                                  24.691ms 
 7:  2001:b00:1:1:1::1c3                                  25.067ms 
 8:  2001:b01:2400:ce::1                                  21.959ms 
 9:  2001:b01:2400:ce::2                                  21.954ms 
10:  unassigned.invalid                                   32.194ms 
11:  unassigned.invalid                                   41.128ms reached
     Resume: pmtu 1500 hops 11 back 16 

From ITA host (Karsolink)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 3, hop 4, hop 9 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.028ms pmtu 1500
 1:  karsolink-01.net.karsolink.com                        0.774ms 
 2:  2a12:d8c0:109f:121::a1                                0.646ms 
 3:  2a12:d8c0:101f:6::1                                  10.203ms 
 4:  fastweb-v6.mix-it.net                                10.600ms 
 5:  2001:b00:1:1:1::1a9                                   9.958ms 
 6:  2001:b00:1:1:1::1c3                                  10.754ms 
 7:  2001:b01:2400:ce::1                                   9.772ms 
 8:  2001:b01:2400:ce::2                                  10.326ms 
 9:  unassigned.invalid                                   16.307ms 
10:  unassigned.invalid                                   13.539ms reached
     Resume: pmtu 1500 hops 10 back 5 

From SLO host (6connect)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.016ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.677ms 
 1:  fw1-lju.6connect.com                                  0.557ms 
 2:  ccr-to-fw-ccr1-gw-lju.6connect.com                    0.982ms 
 3:  2a00:ee1:800:9::1                                     2.655ms 
 4:  2a00:ee0:1:15::2                                      1.550ms asymm  3 
 5:  2a00:ee0:1:15::2                                     51.373ms pmtu 1500
 5:  2a11:4142:2002::                                      1.288ms asymm  6 
 6:  2620:107:4008:e85::2                                  8.283ms asymm  7 
 7:  irideos-AS3302-v6.mix-it.net                          9.677ms asymm  6 
 8:  2a02:7d8::1                                          11.075ms asymm  9 
 9:  unassigned.invalid                                   14.558ms reached
     Resume: pmtu 1500 hops 9 back 9 

From SLO host (T-2)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 8 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.027ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       3.515ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        2.912ms 
 4:  2001:7f8:46:0:1::3303                                 9.935ms 
 5:  i00mil-005-loo179.bb.ip-plus.net                     10.012ms 
 6:  no reply
 7:  2001:b00:1:1:1::1ab                                  14.800ms asymm  8 
 8:  2001:b00:1:1:1::1c3                                  16.781ms asymm  9 
 9:  2001:b01:2400:ce::1                                  15.406ms asymm 10 
10:  2001:b01:2400:ce::2                                  16.291ms asymm 11 
11:  unassigned.invalid                                   21.907ms asymm 12 
12:  unassigned.invalid                                   20.794ms reached
     Resume: pmtu 1500 hops 12 back 8